The article says, "Continental North America had just 6 percent of the
world's population, yet it had 34 percent of the world's human biomass
due to obesity."

It would be well to mention that "biomass
due to obesity" means biomass beyond a BMI of 30. It does not mean that,
because of obesity, North America has 34 percent of the world's human
biomass.

It would also be well to mention that the report cited gives
data in "tonnes", not "tons". One tonne is equal to 1000 kg,
not 2000 pounds. The report says the average adult body mass in North America
is 80.7 kg or 178 pounds, which is 12.4 per tonne and 11.2 per ton.